Stage 3 is direct physical resistance. Direct physical resistance is the last resort and it should be avoided and delayed as long as possible and only invoked when all other options have been thoroughly exhausted.
There are those who, "talk tough" and claim they will resist when the time comes but what they fail to realize is that if you are inactive during the first 2 stages and save your efforts for the last resistance, You Will Fail.

When the Nazi's in Germany, were moving from door to door, dragging people out of their homes, that was the time to fight back physically but due to the lack of ideological resistance and civil disobedience leading up to that moment, even an armed resistance would have likely failed at that point.
An armed uprising can only succeed if the people have established an attitude of active resistance and active resistance is only possible after their minds have broken free from the main stream propaganda.
If you want to fight back, then it's now or never - you're not going to get another chance and the stakes are far higher than they were in Nazi Germany.